Nah no offense taken, don't be rude I couldn't probably afford one either and am lucky to have a boss that allows me to use the car in such a way, especially with a 4 week trip to WA coming up. I'm a motorbike man so car brands don't come into the equation except for Bathurst then I'm a Ford man.
Back to the stressed engines, I reckon they're only stressed depending on how you drive them, even when towing 2.5t. Mates a service foreman at a Mazda dealer and he's had a customer on their third engine in a Mazda 6 but he says the car is thrashed, engine management systems and computers give him the full picture of how the vehicle is driven so no hiding any more.